EP0108595A2 - Künstlicher Kehlkopf - Google Patents
Künstlicher Kehlkopf Download PDFInfo
- Publication number
- EP0108595A2 EP0108595A2 EP83306643A EP83306643A EP0108595A2 EP 0108595 A2 EP0108595 A2 EP 0108595A2 EP 83306643 A EP83306643 A EP 83306643A EP 83306643 A EP83306643 A EP 83306643A EP 0108595 A2 EP0108595 A2 EP 0108595A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- larynx
- speaker
- prosthetic
- signal
- horn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/20—Epiglottis; Larynxes; Tracheae combined with larynxes or for use therewith
Definitions
- the present invention relates to the field of sound producing prosthetic devices for use by laryngectomized patients.
- Transcervical laryngeal devices are electronic or pneumatic devices in which the sound enters the mouth through a tube. While such units produce a loud sound and may be used in early post-operative stages by patients with thick neck tissue who cannot use transcervical devices, transoral devices are noticeable in use, require placement in the mouth, and are prone to saliva blockages. Additionally, transoral devices may result in articulation which is disturbed by the placement of the tube near the tongue and lips, this results in speech which is less intelligible than that produced by transcervical devices.
- Pichler eliminated any need for transoral wiring by suggesting that a wireless induction system could be used to transmit sound from a pocket oscillator driven primary coil worn around the neck to an intraoral secondary coil associated with an intraoral earphone.
- Pichler's device has apparently never been placed on the market. See Goode, supra.
- a miniature pulse generator capable of being mounted on a denture or dental retainer can be used to drive a small, waterproof, low impedence, modified insert earphone.
- Power is provided to the pulse generator by a hand-held, external radio frequency generator operating at 100 kHz and using a 15-volt rechargeable battery pack, carried in the pocket, with a battery drain of 780 mW.
- the transmitter coil lies about 1.5 cm from a miniature, tuned receiving coil in the denture.
- a wireless electro-larynx consisting of a receiver/ speaker concealed in an ordinary denture or prosthesis, and an external transmitter worn under the patient's clothing has been suggested by Zwitman et al. See “Development and Testing of an Intraoral Electrolarynx for Laryngectomy Patients", Zwitman et al, Journal Of Speech And Hearing Disorders, XLIII, 263-269 (May, 197B).
- Zwitman et al device a 1 millimeter thick receiver is housed in the center of the denture and surrounded by a receiving coil which is used to pick up an incoming differentiated transmitter-generated pulse which is then amplified.
- This amplified signal is used to change the state of a bistable multivibrator circuit, which then activates an astable multivibrator.
- This astable multivibrator then begins to oscillate at a repetition rate (fundamental frequency) of 70 Hz to produce an audible buzz.
- Current is permitted to pass through the receiver for only 0.3 msec periods, which are long enough to facilitate the generation of intelligible speech, while conserving battery life.
- a plastic tube is attached to the speaker of the Zwitman et al device which extends medially and slightly upward past the mid-line of the palate to a point just short of the opposite side of the dental prosthesis.
- This tube is intended to transmit sounds to the posterior region of the oral cavity to provide maximum resonance, and to prevent the tongue from occluding the speaker aperature.
- Two rechargable batteries are used to power the receiver/speaker for up to five continuous hours. Since the standby current drain is low, Zwitman et al reported that intermittent use of the unit permits it to function for an entire 1aay before recharging is necessary.
- Stern has suggested the desirability of providing a tongue operated switch for power control, and of providing a speaker housed in the mouth which produces varied output frequencies which simulate changes of pitch; however Stern has failed to provide designs for these components.
- the present invention provides a novel, completely self-contained intraoral artificial larynx.
- This larynx is an ultra thin, miniature device which may be mounted on or within a dental appliance and is wholly contained in the mouth. Based on an estimate of 3 hours per day of continuous speaking, the larynx of the present invention may be used for up to 30 days without battery replacement or recharging.
- the preferred embodiment of the present invention comprises a power source, tongue activated controls, power saving signal generation circuitry, an audio amplifier, an intraoral sound source, and an acoustic amplifier which is tuned to the output of that speaker.
- Power saving signal generation circuitry is designed to produce a high amplitude signal which drives the speaker to produce an "audio flicker".
- the tongue activated controls comprise contacts located on the palate which may be touched by the tongue to activate, deactivate, or temporarily disable the artificial larynx. In order to prevent accidental activation or deactivation, the on-off contact must be touched for preselected periods of time to produce the desired activation or deactivation of the device.
- Occlusion of the speaker with saliva or water is prevented by locating the speaker at one end of an acoustic horn, encapsulating the speaker, and by disposing a liquid barrier means, such as a microporous film or screen, over the speaker and/or horn orifice to prevent fouling of the speaker )with mouth fluids.
- This barrier means is installed such that its attenuation of sound is minimized.
- Laryngectomized patients require short term training to use the device of the present invention, and this device can be conveniently worn for extended periods of time. Unlike prior art devices which have relied upon extra-oral components, the device of the present invention is worn entirely within the mouth and is incapable of visual detection. A unique combination of tongue controls for permitting convenient intermitent use, novel power saving circuitry, and tuned acoustic amplification permit the device of the present invention to be used for far longer periods between battery replacement or recharge then has heretofore been possible.
- the artificial larynx is completely sealed, and includes a solar cell for recharging a self-contained power source, such as a rechargable battery.
- the larynx is made so that the power source may be recharged by placing it under a light source when it is not being worn.
- circuitry of the preferred embodiment is simplified, sound output is maximized, and current leakage and acoustic hum are minimized.
- a primary object of the present invention is the provision of an entirely self-contained, intraoral larynx.
- a further object of the present invention is the provision of an intraoral larynx which is entirely tongue controlled.
- a further object of the present invention is the provision of a tongue controlled intraoral switching device.
- Another aim of the present invention is the provision of power saving signal generation circuitry for use in driving an artificial larynx.
- a further object of the present invention is the provision of an artificial larynx which resists fouling by saliva or water.
- a further aim of the pres nt invention is the provision of an artificial larynx having a tuned acoustic amplifier for maximizing the amplitude of sound generated by the electronic tone generator.
- the intraoral artificial larynx of the present invention generally comprises a prosthetic means for mounting the larynx within the oral cavity, a power source mounted on the prosthetic means, signal generation means mounted on the prosthetic means for generating preselected electrical signals, and speaker means mounted on the prosthetic means for converting said signal into acoustic energy.
- the prosthetic means designated generally 100, will be seen to generally comprise a conventional palatal denture or dental prosthesis.
- Such a prosthesis usually comprises means for anchoring the prosthesis in the mouth cavity, such means in Fig. 1 being dental wires 102, 104 and 106.
- the body 108 of the dental prosthesis is formed from conventional dental prosthetic materials, such as an acrylic polymer, which is shaped to fit comfortably against the roof of the wearer's mouth.
- This body is preferrably formed to encapsulate all of the electrical components of the preferred embodiment larynx, and is molded to contain an acoustic horn 110, which is the preferred acoustic amplification means for amplifying acoustic energy generated by the aforementioned speaker means.
- the preferred acoustic horn 110 is arcuate, having its minimum diameter at its juncture with speaker 112 and its maximum diameter at its terminus 110a at the rear of the dental prosthesis 100.
- horn 110 is generally circular at its point of coupling to speaker 112 and gradually becomes elliptical as it approaches its terminus 110a.
- a gentle curvature of the horn has been selected.
- the horn may double back on itself so that this component is located entirely on one side of the mid-line of the prosthesis.
- a metal (stainless steel) spiral or spring may be used in the bend of the horn to maintain the (1/8") lumen of the horn.
- a length of heat settable 1/8" I.D. tubing (available from Chemotron, Inc.) may be formed into its desired shape using a (silicone coated) conical jig inserted into one end of the tube and a speaker form jig into the other.
- the horn With the stainless steel spring disposed at the point of bend, the horn may be bent over on itself, fastened or wrapped in that position, and heat set, as for example through immersion in boiling water. Once set, the jigs may be removed from the horn and the speaker or speakers fitted into the proximal end of the horn. If desired, the terminal end of the horn may have been sealed with a barrier means as described hereinafter.
- Additional liquid tight seals between these and/or other components may be provided by dipping them into an air dry solution of trichlorethane.
- trichlorethane Such a solution is commercially available under the trade name "Dip It” from Plasti-Dip International, of St. Paul, Minnesota, 55113.
- acoustic horn 110 The length of acoustic horn 110 is carefully selected to maximize the audible output of tones generated by speaker 112.
- a tuning process an example of Which is described more fully hereinafter, should thus be performed which includes testing the desired circuitry with acoustic horns of varying lengths and configurations until maximum amplitudes are achieved for given frequencies.
- horn 110 should have an acoustic length of between about 1.50 and 2.75 inches, preferably about 1.75 and 2.25 inches.
- the larynx of the present invention is controlled by bridging anterior contacts 114, or posterior contacts l16 with the tongue. As is described more fully hereinafter, the touching of either of these pairs contacts acts to complete a ground path in the artificial larynx.
- Anterior contacts 114 provide a pause control which instantaneously interrupts the generation of sound by the larynx for as long as the contacts are bridged.
- the posterior contacts 116 provide an on-off control which must be touched by the tongue for a pre-selected period of time. By requiring prolonged tongue contact of posterior contacts 116, inadvertant switching between the off and on positions is effectively prevented.
- the grounding contact of each pair of contacts may be common to the pause and off-on switches. Accordingly, only three adjacent contacts are needed in this embodiment. These contacts can then be conveniently placed at the anterior of the prosthesis with the grounding contact located between the on-off and pause contacts.
- the efficiency of the sound circuitry makes it possible to use a low-voltage, low-current power source, such as batteries 118.
- these batteries may be entirely sealed within the dental prosthesis 100, and may be of the lithium, silver oxide, or nickel cadium type. In alternate embodiments replacement of such batteries may be permitted.
- the current drain of the larynx of the present invention is sufficiently low as to facilitate recharging of the larynx on a periodic basis by removing the larynx and replacing it under an artificial light source, such as incandescent light.
- acoustic horn 110 aids in protecting speaker l12 from liquids contained within the mouth. This protection results from the location of the speaker at the proximate end of the horn, and may be further enhanced through the provision of a mesh 122 located at the speaker orifice. Applicants have found that introduction of saliva or water into acoustic horn 110 is unlikely, and that such amounts as may be introduced to acoustic horn 110 are generally shielded from speaker l12 by mesh 122. Mesh 122 does not appreciably interfere with sound transmission from the speaker 112 to horn 110.
- Additional protection against flooding may be attained by covering the mouth of the horn 110 with a thin sheet of material which will prevent liquids from entering the horn but Which will permit water vapor and air to pass therethrough.
- Hydrophobic microporous materials such as polytetrafluoroethylene sheets (half mil) sold under the tradename "Teflon® FEP fluorocarbon film” by American Durafilm Co, Inc. of Newton Lower Falls, MA, are suitable for this purpose.
- the sheet 111 is shown wrapped over the end 110a of the horn and bound to an outer circumferential surface of that end using a binding, such as suture thread 113, to create a liquid tight seal with the horn.
- the portion of the sheet 111 disposed over the mouth of 'the horn is loosely draped into the horn mouth such that it extends from between about 1/4" to 1/8" into the mouth of the horn. This loose drape of the sheet material is sufficient to prevent sound attenuation, but not so great as to facilitate entrapment of liquids in the horn orifice.
- This microporous sheet when used as described above, may supplement or replace the aforementioned mesh.
- Fig. 1 diagrammatically illustrates representative mountings of solar cell 120, battery 118, sound generation circuitry 124, speaker 112, mesh 122, contacts 114 and 116, and acoustic horn 110.
- Fig. 2 provides further information concerning the operation of the preferred embodiment larynx of the present invention. In Figure 2, further details of the sound generation and switching circuitry are provided. As a matter of illustrative convenience, batteries 118 and solar cell 120 are not illustrated in Figures 2 or 3.
- Figure 3 is a circuit diagram providing the details of the circuit which is diagrammatically illustrated in Figure 2. Portions of the circuit illustrated in Figure 3 which correspond to blocks illustrated in Figure 2 are surrounded by similarly numbered dotted outlines.
- the signal generation circuitry of the present invention is seen to comprise a signal generator 200 and differentiator 202.
- a square wave signal generator is utilized, the resultant signal of which is differentiated to produce an output signal comprising a plurality of spikes which are separated by long near-zero voltage time periods.
- the square wave signal generator comprises an astable multivibrator which generates a signal having a frequency between 0 and 20 KHz preferably 60-120 Hz.
- a duty cycle control means is thus provided which is utilized to reduce the duty cycle of the output of the signal generation means by profitably utilizing the audio flicker effect.
- the duty cycle of the sound generation means is at least less than 10%, generally less than 5%, and most preferably less that about 1.0%. In fact, good results have been obtained using a duty cycle of about 0.85%.
- the preferred embodiment artificial larynx further comprises a tongue activatable intraoral switching device.
- This switching device comprises an on-off circuit for activating or deactivating the device.
- This selective enabling and disabling function is accomplished by providing a timing means for timing the closure of a switch which, in the prefer- red embodiment, is accomplished by completion of a ground path through contacts 116.
- the desired grounding may be accomplished by bridging between adjacent contacts with the tongue, or by using the body as the system's ground whereby touching a single contact will accomplish a grounding of the system.
- counter 204 counts in response to the output ( ⁇ ) of the signal generation means when the on-off contacts 116 are grounded, but is inhibited (through Rll in Fig.
- anterior "pause” contacts 114 are not grounded, and thus also provide a high level signal to "and” gate 210, then the differentiated output of signal generator 200 will be permitted to pass to high gain amplifier 212 and to speaker 112.
- the tongue may be removed from on-off contact 116, and the flip-flop 208 will remain in its "on” position.
- pause contacts 114 are utilized to momentarily deactivate amplifier 212 and speaker 112. Under normal conditions, pause contacts 114 are open, and thus the signal to "and" gate 210 is high (through Rl2 in Fig. 3), permitting, in canbination with a high signal from flip-flop 208, the passage of the differentiated output signal 202 to amplifier 212 and speaker 112. When the tongue is used to bridge pause contacts 114, the output drops to zero, and "and" gate 210 prevents the transfer of any signal to the amplifier and speaker.
- the switching device of the present invention may be utilized by a proficient user to closely approximate natural speech.
- the pause contact 114 may be utilized to stop any sound from being generated between sentences, or even between words.
- FIG. 3 a circuit diagram corresponding to the block diagram set forth in Fig. 2 is provided, each of the blocks of Fig. 2 being illustrated within dotted outlines surrounding its respective circuit components.
- Preferred components for use in constructing the preferred embodiment artificial larynx are as follows
- connections to pins Q7 and Q8 of binary counter IC2 provide the aforementioned two second and four second on-off times.
- Other combinations of connections Q1-Q14 may be used to speed, slow, or otherwise alter the relative on-off times of the preferred embodiment device.
- an acoustic amplification means for amplifying acoustic energy within the oral cavity. It is further desired to tune the acoustic amplification means to the sound source to maximize the amplification. Accordingly, tests have been conducted to demonstrate the effectiveness of a horn to amplify the output of a speaker of the type preferred for use in the artificial larynx of the present invention. In one set of tests, the output of a BK1610 speaker was fed into a horn. The output from the horn was compared to the output of a similar BK1610 speaker, sound measurements being taken using a Scott type 451 (A weighted) sound meter.
- the speaker with horn generated a 57 decibel tone, by comparison to a 51 decibel tone generated by the speaker without a horn.
- a 60 decibel output was achieved with the horn and a 53 decibel output without the horn.
- a 62 decibel output was achieved with the horn, and a 54 decibel output achieved without the horn.
- the voltage of the preferred embodiment device may also be varied, and that with such variations, some variation in loudness will be obtained.
- a decibel output of between about 91 and 111 decibels may be obtained using different values for resistor R10 in section 212.
- Table II which is set forth below, provides information concerning current drain for both conditions of 'device on' and 'device off' and the decibel output for different values of R10.
- amplifier resistor R10 may be provided to power the preferred embodiment larynx of the present invention.
- a filter capacitor is provided to eliminate perceived hum' by the user when the device is in the of for pause condition.
- This filter capacitor may simply by connected between the power source (+V) and ground, and acts to eliminate any detectable "leak through” of the signal to the speaker while the unit is in the off or pause condition.
- a 10 ufd capacitor has been found suitable for this purpose, and may be mounted for removal with a replaceable or rechargable power source.
- the current passing to the tongue may be reduced by increasing the resistor value of resistors Rll and R12 to 680 K, which reduces the current between contacts to less than 2 u amps during operation of the contact switches.
- the oscillator period of the signal generator 200 may be varied depending upon the value of resistor R2. For example, periods of 17 msec, 8 msec, 10 msec and 8.8 msec may be obtained using R2 values of 680K, 270K, 390K and 330K respectively. Presently, oscillator periods of between 10-17, preferably about 14, milliseconds are preferred by most patients.
- the amplifier circuit 212 may be modified to achieve desired outputs at acceptable current draws. Both common collector and common emitter amplifiers are believed to be operative in driving the speaker means, however a common collector, direct coupled audio circuit (Figure 5) comprising an NPN transistor (Amperex LDA-404), a silicon flyback diode (Amperex LDD-5) across the speaker terminals and a 1.5 ufd capacitor across the battery connections, is currently preferred.
- the flyback diode provides a cleaner signal at a lower current drain, while the capacitor enables the battery to supply the required current pulse to the speaker. Without this capacitor, the volume is substantially reduced.
- the speaker means of the present invention should comprise two phased speakers, wired in parallel, connected to the output of the amplifier 212.
- the outputs of single vs. dual speakers using common emitter (Type B) and common collector (Type A) ( Figure 5) type amplifier circuits were compared. The results are summarized below:
- the use of dual speakers may offset db losses which may result from using microporous barrier means over the horn orifice.
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- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Pulmonology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83306643T ATE41592T1 (de) | 1982-11-01 | 1983-11-01 | Kuenstlicher kehlkopf. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/438,376 US4550427A (en) | 1981-03-30 | 1982-11-01 | Artificial larynx |
US438376 | 1995-05-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0108595A2 true EP0108595A2 (de) | 1984-05-16 |
EP0108595A3 EP0108595A3 (en) | 1985-01-23 |
EP0108595B1 EP0108595B1 (de) | 1989-03-22 |
Family
ID=23740410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83306643A Expired EP0108595B1 (de) | 1982-11-01 | 1983-11-01 | Künstlicher Kehlkopf |
Country Status (6)
Country | Link |
---|---|
US (1) | US4550427A (de) |
EP (1) | EP0108595B1 (de) |
JP (1) | JPS59131350A (de) |
AT (1) | ATE41592T1 (de) |
AU (1) | AU570650B2 (de) |
DE (1) | DE3379447D1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5326349A (en) * | 1992-07-09 | 1994-07-05 | Baraff David R | Artificial larynx |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4672673A (en) * | 1982-11-01 | 1987-06-09 | Thomas Jefferson University | Artificial larynx |
US4605927A (en) * | 1983-08-26 | 1986-08-12 | Thomas Jefferson University | Intra-oral control unit and system |
US4783656A (en) * | 1983-08-26 | 1988-11-08 | Thomas Jefferson University | Intra-oral control unit and system |
DE3529553A1 (de) * | 1985-08-17 | 1987-02-26 | Kuhn Dr & Co | Sprechhilfegeraet fuer kehlkopfoperierte |
US4706292A (en) * | 1985-10-07 | 1987-11-10 | Joseph A. Resnick | Speech prosthesis |
US4821326A (en) * | 1987-11-16 | 1989-04-11 | Macrowave Technology Corporation | Non-audible speech generation method and apparatus |
US5212476A (en) * | 1990-09-28 | 1993-05-18 | Maloney Sean R | Wireless intraoral controller disposed in oral cavity with electrodes to sense E.M.G. signals produced by contraction of the tongue |
US5119831A (en) * | 1991-01-11 | 1992-06-09 | University Of Iowa Research Foundation | System and method for detecting pressure of selected body parts |
JPH08265891A (ja) * | 1993-01-28 | 1996-10-11 | Tatsu Ifukube | 電気人工喉頭 |
US5828758A (en) * | 1995-10-03 | 1998-10-27 | Byce; Michael L. | System and method for monitoring the oral and nasal cavity |
US5888187A (en) | 1997-03-27 | 1999-03-30 | Symphonix Devices, Inc. | Implantable microphone |
US7212639B1 (en) | 1999-12-30 | 2007-05-01 | The Charles Stark Draper Laboratory | Electro-larynx |
US7976547B2 (en) * | 2004-12-21 | 2011-07-12 | Depuy Products, Inc. | Cement restrictor with integrated pressure transducer and method of measuring the pressure at the distal end of a bone canal |
US7561694B1 (en) * | 2005-04-18 | 2009-07-14 | Sun Microsystems, Inc. | Session mobility for wireless devices |
WO2012003602A1 (zh) * | 2010-07-09 | 2012-01-12 | 西安交通大学 | 一种电子喉语音重建方法及其系统 |
US9143106B1 (en) | 2012-12-30 | 2015-09-22 | Grindstone Medical LLC | Method, device and system for providing speech |
TW201446226A (zh) * | 2013-06-04 | 2014-12-16 | jing-feng Liu | 人工發聲裝置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2093453A (en) * | 1935-08-01 | 1937-09-21 | William F Kellotat | Artificial larynx |
US2862209A (en) * | 1957-06-24 | 1958-12-02 | Cooper Herbert Kurtz | Speech aid |
AT208505B (de) * | 1958-06-17 | 1960-04-11 | Herbert Dr Pichler | Einrichtung zur künstlichen Mundschallerzeugung, insbesondere für Kehlkopflose |
US3766318A (en) * | 1971-04-19 | 1973-10-16 | Morris M | Electronic voice box apparatus |
US3914550A (en) * | 1973-08-13 | 1975-10-21 | Cardwell Associates Inc | Artificial speech device |
GB1592872A (en) * | 1978-05-09 | 1981-07-08 | Lacey C | Voice creating apparatus |
EP0061702A2 (de) * | 1981-03-30 | 1982-10-06 | Thomas Jefferson University | Künstlicher Kehlkopf |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072745A (en) * | 1959-03-12 | 1963-01-08 | Bell Telephone Labor Inc | Unitary artificial larynx |
US3084221A (en) * | 1959-03-26 | 1963-04-02 | Lancaster Cleft Palate Clinic | Speech aid |
US3291912A (en) * | 1963-04-18 | 1966-12-13 | Bell Telephone Labor Inc | Artificial larynx |
US3508000A (en) * | 1966-04-04 | 1970-04-21 | Calvin M Snyder | Pressure sensitive artificial larynx |
GB1213521A (en) * | 1968-01-06 | 1970-11-25 | George Washington Ltd | Improvements in or relating to vocal aids |
DE2507704C3 (de) * | 1975-02-22 | 1980-07-24 | Dr. Kuhn & Co Gmbh, 5000 Koeln | Sprechhilfegerät für Kehlkopfoperierte |
DE2515006A1 (de) * | 1975-04-07 | 1976-10-21 | Klaus Hassheider | Sprechgeraet fuer kehlkopfoperierte |
US4039756A (en) * | 1976-11-17 | 1977-08-02 | Missouri Province Educational Institute | Artificial larynx with semi-automatic inflection control |
CH611151A5 (de) * | 1977-05-13 | 1979-05-31 | Georges Ducommun | |
US4223411A (en) * | 1978-08-07 | 1980-09-23 | Massachusetts Institute Of Technology | Internal laryngeal prosthesis |
JPS5571400A (en) * | 1978-11-24 | 1980-05-29 | Hitachi Ltd | Monolithic power ic and acoustic unit |
JPS57148800A (en) * | 1981-02-09 | 1982-09-14 | Marei Furedorikuson Jiyon | Artificial voice generator |
-
1982
- 1982-11-01 US US06/438,376 patent/US4550427A/en not_active Expired - Fee Related
-
1983
- 1983-10-31 JP JP58205697A patent/JPS59131350A/ja active Pending
- 1983-11-01 DE DE8383306643T patent/DE3379447D1/de not_active Expired
- 1983-11-01 AT AT83306643T patent/ATE41592T1/de active
- 1983-11-01 AU AU20873/83A patent/AU570650B2/en not_active Ceased
- 1983-11-01 EP EP83306643A patent/EP0108595B1/de not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2093453A (en) * | 1935-08-01 | 1937-09-21 | William F Kellotat | Artificial larynx |
US2862209A (en) * | 1957-06-24 | 1958-12-02 | Cooper Herbert Kurtz | Speech aid |
AT208505B (de) * | 1958-06-17 | 1960-04-11 | Herbert Dr Pichler | Einrichtung zur künstlichen Mundschallerzeugung, insbesondere für Kehlkopflose |
US3766318A (en) * | 1971-04-19 | 1973-10-16 | Morris M | Electronic voice box apparatus |
US3914550A (en) * | 1973-08-13 | 1975-10-21 | Cardwell Associates Inc | Artificial speech device |
GB1592872A (en) * | 1978-05-09 | 1981-07-08 | Lacey C | Voice creating apparatus |
EP0061702A2 (de) * | 1981-03-30 | 1982-10-06 | Thomas Jefferson University | Künstlicher Kehlkopf |
Non-Patent Citations (2)
Title |
---|
JOURNAL OF BIO ENGINEERING, vol. 1, November 1977, New York, USA; S.G. KNORR et al. "The design of a wireless controlled intra-oral electrolarynx", pages 165-171 * |
JOURNAL OF SPEECH AND HEARING DISORDERS, vol. XLIII, May 1978, Washington, USA; D.H. ZWITMAN et al. "Development and testing of an intraoral electrolarynx for laryngectomy patients", pages 263-2698 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5326349A (en) * | 1992-07-09 | 1994-07-05 | Baraff David R | Artificial larynx |
Also Published As
Publication number | Publication date |
---|---|
EP0108595B1 (de) | 1989-03-22 |
AU570650B2 (en) | 1988-03-24 |
EP0108595A3 (en) | 1985-01-23 |
AU2087383A (en) | 1984-05-10 |
JPS59131350A (ja) | 1984-07-28 |
ATE41592T1 (de) | 1989-04-15 |
US4550427A (en) | 1985-10-29 |
DE3379447D1 (en) | 1989-04-27 |
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